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J C Javitt

Publications and source records attributed to J C Javitt.

At least 55 records · Page 3Linked to original sources
PubMed1994

The VF-14. An index of functional impairment in patients with cataract.

OBJECTIVE: To describe the development and the performance of a brief questionnaire designed to measure functional impairment caused by cataract (the VF-14). DESIGN: Observational cross-sectional study. Patients were recruited between July 15 and December 15, 1991. SETTING: Patients were recruited from the practices of 70 ophthalmologists, located in Columbus, Ohio (N = 21), St Louis, Mo (N = 26), and Houston, Tex (N = 23). PATIENTS: Seven hundred sixty-six patients undergoing cataract surgery for the first time. MAIN OUTCOME MEASURES: Preoperative best corrected visual acuity in each eye; scores on the VF-14, a new index of functional impairment in patients with cataract; patient reports of overall trouble and satisfaction with their vision; and scores on the Sickness Impact Profile, a measure of general health status. RESULTS: The VF-14 has high internal consistency (Cronbach's alpha = .85) and correlates more strongly with the overall self-rating of the amount of trouble and satisfaction patients have with their vision than do several measures of visual acuity or the Sickness Impact Profile score. The VF-14 score is moderately correlated with visual acuity in the better eye. CONCLUSIONS: The VF-14 is a reliable and valid measure of functional impairment caused by cataract and provides information not conveyed by visual acuity or a general measure of health status.

Cataract↗
PubMed1994

The socioeconomic aspects of laser refractive surgery.

Excimer laser photorefractive keratectomy (PRK) has shown promising results in preliminary studies. However, even if long-term safety and efficacy are demonstrated, questions have been raised about its viability from a cost-effectiveness perspective. We analyzed the economic investment of elective excimer laser PRK both from the societal and individual perspectives. When the present value of likely expenses associated with excimer laser PRK and follow-up care are compared with those entailed in wearing soft contact lenses, PRK is roughly equivalent to daily wear soft contact lenses over a 10-year horizon and considerably less expensive than extended-wear soft contact lenses. When the analytic perspective is extended to 20 years, excimer laser PRK is a less expensive investment than both daily wear and extended-wear soft contact lenses.

Contact Lenses, Hydrophilic↗
PubMed1994

National outcomes of cataract extraction. Retinal detachment and endophthalmitis after outpatient cataract surgery. Cataract Patient Outcomes Research Team.

BACKGROUND: A near-total shift to cataract extraction on an outpatient basis occurred as a result of an administrative ruling by the Health Care Financing Administration. No national study has been conducted to assess the possible effects of that decision on clinical outcomes of surgery. The authors compared the rates of retinal detachment (RD) repair and hospitalization for endophthalmitis after extracapsular cataract extraction (ECCE) (including phacoemulsification) in 1986 and 1987 with those following inpatient cataract extraction in 1984. METHODS: Using the 5% random sample of Medicare beneficiaries, we analyzed the claims of all individuals 66 years of age or older who underwent ECCE by nuclear expression or phacoemulsification in 1986 and 1987. A total of 57,103 patients were identified and followed to the end of 1988. Cumulative probability of RD repair and hospitalization for endophthalmitis was calculated by standard lifetable methods. These findings were compared with the cumulative probability of the same complications in a cohort of 330,000 patients who underwent cataract extraction on an inpatient basis in 1984. RESULTS: In the 1986-to-1987 cohort, the cumulative probability of RD within 3 years after cataract surgery was 0.81% and the cumulative probability of endophthalmitis within 1 year was 0.08%. The rate of RD is similar to that which we previously reported for 330,000 patients who underwent inpatient surgery in 1984, but the rate of endophthalmitis is significantly lower in the 1986-to-1987 outpatient cohort (0.08% versus 0.12%; z = 2.42; P = 0.01). CONCLUSIONS: The shift to outpatient cataract surgery was accompanied by no significant increase in the probability of RD repair and possibly a significant decrease in the rate of hospitalization for endophthalmitis.

Aged↗
PubMed1994

Variation in cataract surgery practice and clinical outcomes.

PURPOSE: To examine associations between surgical technique, patient and surgeon characteristics, and clinical outcomes of cataract surgery. METHODS: Seventy-five ophthalmologists were recruited from three cities based on a sampling scheme stratified by surgeon-reported annual volume of cataract surgery. Seven hundred seventy-two patients undergoing first eye cataract surgery were enrolled, with complete preoperative, perioperative, and 4-month postoperative clinical data on 717 patients (93%). RESULTS: Sixty-five percent of surgery was performed by phacoemulsification and 35% by standard extracapsular (ECCE) techniques. Performance of ECCE was associated with the presence of ocular comorbidity and 21 or more years in practice of the surgeon. Performance of phacoemulsification was associated with annual volume of cataract surgery, wherein high-volume (201-399 patients annually) and very high-volume (> 400 patients annually) surgeons had 3.7 and 3.9 times the likelihood of performing phacoemulsification compared with moderate-volume (51-200 cases annually) surgeons. The rates of intraoperative, perioperative, and 4-month postoperative adverse events and the amount of improvement in visual acuity did not differ either by surgical technique or volume stratum. The reported occurrence of posterior capsular opacification within 4 months of surgery was increased in the presence of cortical opacification, one city, and patients operated on by either high- or very high-volume surgeons. CONCLUSIONS: In this cohort, no difference in clinical outcomes, as measured by change in visual acuity or occurrence of postoperative adverse events (except for posterior capsular opacification), can be attributed to performance of phacoemulsification versus ECCE or to the reported annual volume of cataract surgery of the surgeon. Self-reported high and very high annual volume of cataract surgery is associated independently with performance of phacoemulsification and surgeon's report of posterior capsular opacification at 4 months after cataract surgery.

Aged↗
PubMed1994

National study of cataract surgery outcomes. Variation in 4-month postoperative outcomes as reflected in multiple outcome measures.

BACKGROUND: Although ophthalmologists have long recognized that visual acuity alone is an inadequate measure of visual impairment, the need for and outcomes of cataract surgery historically have been assessed in terms of visual acuity. PURPOSE: To examine the relation among different cataract surgery outcome measures, including a 14-item instrument designed to measure functional impairment caused by cataract (the VF-14), at 4 months after cataract surgery. METHODS: The authors performed a longitudinal study of 552 patients undergoing first eye cataract surgery by 1 of 75 ophthalmologists practicing in Columbus, Ohio, St. Louis, Missouri, or Houston, Texas. Patients were interviewed, and clinical data were obtained preoperatively (July 15, 1991-March 14, 1992) and 4 months postoperatively. RESULTS: The percentage of patients judged to be improved at 4 months after cataract surgery varied by the outcome measure used: Snellen visual acuity (96%); VF-14 score (89%); satisfaction with vision (85%); self-reported trouble with vision (80%); and Sickness Impact Profile score (67%). The change in patients' ratings of their trouble with vision and their satisfaction with vision were correlated more strongly with the change in VF-14 score than with the change in visual acuity (operated eye or better eye). The average change in VF-14 score was unrelated to the preoperative visual acuity in the eye undergoing surgery. CONCLUSION: Estimates of the proportion of patients benefiting from cataract surgery vary with the outcome measure used to measure benefit. Change in VF-14 score, a measure of functional impairment related to vision, may be a better measure of the benefit of cataract surgery than change in visual acuity.

Aged↗
PubMed1994

Preventive eye care in people with diabetes is cost-saving to the federal government. Implications for health-care reform.

OBJECTIVE: Diabetic retinopathy, which leads to macular edema and retinal neovascularization, is the leading cause of blindness among working-age Americans. Previous research has demonstrated significant cost savings associated with detection of eye disease in Americans with type I diabetes. However, detection and treatment of eye disease among those with type II diabetes was previously thought not to be cost-saving. Our purpose was to estimate the current and potential federal savings resulting from the screening and treatment of retinopathy in patients with type II diabetes, based on recently available data concerning efficacy of treating both macular edema and neovascularization along with new data on federal budgetary costs of blindness. RESEARCH DESIGN AND METHODS: We used computer modeling, incorporating data from population-based epidemiological studies and multicenter clinical trials. Monte Carlo simulation was used, combined with sensitivity analysis and present value analysis of cost savings. RESULTS: Screening and treatment for eye disease in patients with type II diabetes generates annual savings of $247.9 million to the federal budget and 53,986 person-years of sight, even at current suboptimal (60%) levels of care. If all patients with type II diabetes receive recommended care, the predicted net savings (discounted at 5%) exceeds $472.1 million and 94,304 person-years of sight. Nearly all savings are associated with detection and treatment of diabetic macular edema. Enrolling each additional person with type II diabetes into currently recommended ophthalmological care results in an average net savings of $975/person, even if all costs of care are borne by the federal government. CONCLUSIONS: Our analysis indicates that prevention programs aimed at improving eye care for patients with diabetes not only reduce needless vision loss but also will provide a financial return on the investment of public funds.

Blindness↗
PubMed1994

Using Medicare claims for outcomes research.

Medicare claims databases have several advantages for use in constructing episodes of care for outcomes research. They are population-based, relatively inexpensive to obtain, include large numbers of cases, and can be used for long-term follow-up. However, the sheer size of these claims databases, along with their primarily administrative (as opposed to clinical) nature, requires that researchers take special care in using them. The 10 PORTs using Medicare claims provided information on their approach to several key issues in working with these data, including: 1) identifying the index cases or patient cohorts to be studied; 2) defining the length of the episode; and 3) measuring outcomes. This paper reports the experience and knowledge gained by these PORTs in using these claims to create and analyze episodes of care.

Databases, Factual↗
PubMed1994

Practice patterns of the office-based ophthalmologist.

Practice patterns of office-based ophthalmologists were characterized using data collected from the National Ambulatory Medical Care Survey (NAMCS) of 1989, a national probability sample survey conducted by the National Center for Health Statistics. The sample includes office visits made between 1989 and 1990 to nonfederally-employed physicians primarily engaged in office-based practice. Over 38 million office-based patient visits documented in the NAMCS were analyzed. Fifty-two percent of patients (20.4 million) were over 65 years old; 90% (34.9 million) were white, with blacks and Asians accounting for 5% (1.9 million) and 3% (1.1 million) of visits, respectively. The leading primary diagnoses and professional activity associated with the visits were cataract/cataract surgery 23% (8.9 million), disorders of refraction 19.5% (7.5 million), and glaucoma 13% (4.9 million). Over 40% (16.1 million) of visits were for visual dysfunction, abnormal appearance, or abnormal sensation. Nearly 33% (12.5 million) were related to either a diagnostic/screening session or some form of treatment. The duration of visits ranged from 6 to 10 minutes (22.9%), 11 to 15 minutes (29.8%), and 31 minutes or longer (6.7%); 74% (28.1 million) of the patients were asked to return for a follow-up visit at a specified time, and 13% to return if needed. The major sources of reimbursement for office visits were Medicare (41%, 15.6 million); Blue Cross/Blue Shield (13%, 5 million); and other commercial insurance (15.5%, 5.8 million).

Adolescent↗
PubMed1993

National outcomes of penetrating keratoplasty. Risks of endophthalmitis and retinal detachment.

We studied rehospitalization for endophthalmitis or retinal detachment (RD) in 40,351 Medicare beneficiaries who were admitted to US hospitals for penetrating keratoplasty (PK) between 1984 and 1987. This cohort represents 56.5% of all PKs performed during this period for recipients of age to receive Medicare benefits. Penetrating keratoplasty was combined with intracapsular cataract extraction in 1188 patients (2.9%) and with extracapsular cataract extraction in 7038 patients (17.4%). Anterior vitrectomy was performed in 8428 patients (20.9%). The risk of rehospitalization for endophthalmitis within 6 months of PK was 0.77%. Concurrent anterior vitrectomy increased this risk to 1.03% (P = .004). The risk of rehospitalization for RD within 2 years of PK was 1.85%. Concurrent anterior vitrectomy increased this risk to 2.49% (P = .0001). Combined PK and intracapsular cataract extraction demonstrated a 3.9-fold increased rate of RD compared with PK and extracapsular cataract extraction (P = .0001). Anterior vitrectomy with PK and extracapsular cataract extraction increased the risk of RD 4.3-fold compared with PK and extracapsular cataract extraction alone (P = .007). Men were at a 68% higher risk of RD than women (P = .0001). The risk of rehospitalization for endophthalmitis following PK is five times higher and the risk of RD two times higher than that reported following cataract surgery. Anterior vitrectomy, however, results in similar risk increases following either surgery.

Aged↗
PubMed1993

Accuracy of coding in Medicare part B claims. Cataract as a case study.

We studied the accuracy of Medicare part B coding for cataract extraction to provide validation for research involving Medicare data. Hospital and physician office records associated with a sample of 802 paid claims for cataract surgery were reviewed. The sample was randomly selected from 118,420 Medicare part B claims for cataract surgery submitted by physicians in an 11-state sample during the first quarter of 1988. Medical records were successfully obtained for 796 cataract surgery episodes (99.2%), of which 794 (99.7%) indicated that cataract extraction had been performed. In the remaining two cases, cataract surgery was attempted but aborted. In 24 (3%) of the 794 cases, the surgical approach (intracapsular or extracapsular) indicated in the operative note differed from the coded on the physician's bill. In all cases in which the operative note indicated a secondary procedure performed at the time of surgery, the billing information was in agreement. We conclude that, at least in the case of cataract surgery, the Medicare part B database is 99% accurate (95% confidence interval, +/- 0.6%) for cataract surgery having occurred and 96% accurate (95% confidence interval, +/- 1.4%) in terms of surgical approach.

Cataract Extraction↗
PubMed1993

Vision change and quality of life in the elderly. Response to cataract surgery and treatment of other chronic ocular conditions.

OBJECTIVE: Evaluation of health care in older populations has increasingly focused on quality of life as a critical outcome of treatment. Vision is assumed to be central to functioning. Data suggest that aging, in itself, is associated with a decline in visual functioning, which, in turn, is related to a decline in physical and mental functioning. Other studies indicate that cataract surgery is followed by significant improvement in vision and visual function. Our objective was to test these assumptions. DESIGN: Prospective study of 1021 patients, consecutively drawn from 76 randomly selected ophthalmologists' offices in three cities. Structured interviews were completed at baseline, 2 months, and 1 year after entry. PATIENTS: Six hundred thirteen patients with cataracts and 408 other ophthalmic patients drawn from the same offices but treated for other chronic ocular disorders. All received refractive services as needed. SETTING: Patients from three cities (Baltimore, Md, St Louis, Mo, and San Diego, Calif) were interviewed once in their homes and twice by telephone. INTERVENTIONS: The study involved the measurement of the effects of usual treatment for cataracts and other degenerative eye diseases. MAJOR OUTCOME MEASURES: Visual, social, and psychological functioning. RESULTS: Within 1 year of treatment, change in visual function was accompanied by significant changes, in the same direction, in quality of life functions: night-time driving, daytime driving, community activities, home activities, mental health, and life satisfaction. In addition, the patients with cataracts showed significantly greater improvement in measures of vision than did the noncataract group. CONCLUSIONS: Regardless of treatment, improvement across quality of life functions occurred when visual function improved. Thus, many types of functional degeneration observed in older populations, attributed to a decline in vision, can be slowed, or even reversed, when visual function is improved. Cataract surgery was effective in improving vision and quality of life functions.

Aged↗